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Ron Nombri
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Discharging P.F.C Capacitor Banks.

07/02/2008 3:51 AM

What is the best and most safe method of discharging capacitor banks on a Power factor Correction Unit?

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Forbes
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#1

Re: Discharging P.F.C Capacitor Banks.

07/02/2008 4:09 AM

The safest way is to open the circuit breaker on the supply to the capacitor bank open the isolator and lock it out, allow about 10 minutes to dissipate the charge and then close the earth switch to ground the capacitors
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JohnDG
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#2
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Re: Discharging P.F.C Capacitor Banks.

07/02/2008 4:36 AM

Warning! This is assuming that there are bleed resistors fitted (to dissipate the charge). Without them, there'd be a bl**dy great bang when the capacitors were earthed.

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Ron Nombri
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#3
In reply to #2

Re: Discharging P.F.C Capacitor Banks.

08/02/2008 7:59 AM

Thank you Forbes and JohnDG, your help was great. After which, I did some background reading, and with your good advice, and have safely discharged our capacitor banks for maintenance works.

Once again, thank you very much.

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